Flooring.



PATENTED' DEC. 31, 1907. RBUROHARTZ.

FLOORING.

APPLICATION FILED MAY 25, 1907.

@31 mm Hot-n 2116 q li wwomo Wad 1 41M, Q MM strength and stability. My invention will be'fully described hereinafter and the features of novelty FERDINAND B URGHARTZ, OF NEW YORK, N. Y.

' FLOORING.

Specification of Letters Patent.

Patented Dec. 31, 1907.

' Application filed May 25. 1907 Serial No. 375.757.

T 0 all tvho'm 'it may concern: Be it known that l, FERDINAND BUR-,

'oHAR'rz, a subject of'the Emperor of Gre'r'- -many, residing in the boron h of Manhattan,

city, county, and State of ew York, have invented certain. new anduseful Improvements inFloorings, of which the following is a specification.

My invention relates to fireproof flooring andhas for its object to improve and lighten the construction thereof, without sacrificing will be pointed out in the appended claims.

Reference'is to be had to theaccompanyin%drawings in which v igure 1 is a plan view of my im roved flo0ring,' 2 IS a sectional view t ereof, '20

Fig. 3 is a etail viewof one of the sections and Fi 4 is-a sectional view of a slightly different form of my invention.

My improved flooring comprises blocks A,

. 5 each of which is com osed of tubular sections B5. In the particu ar construction shown, four sections are employed. The sections are fitted together to form a polygon block, their open ends being in engagement with each other, and to enable .the sections to fit properly their ends are'cut on the bias, so that the sections are wedge-shaped. The longitudinal axes of adjacent tubular sections are arranged at an angle to each other, and the cavities orrecesses. of the sections form to ether an annular chamber E within the-bloci.

It will be seen'that the sections are fitted together at the cornersand along radial sur faces, but the vertical walls which form the outer surface of the block are continuous or unbroken. The axes of the cavities are parallel to the adjacent portions of the blocks outline or perimeter, and are also arallel to the closed top and'bottom walls 0 each section. By adoptin straight-tubular units as sections, -1 am one led to'make the sections b pressure through a suitable di'e thus emp oying a very cheap process of manufacture. he particular arrangement ,of the joints of these sections enables me to have a -continu-- ous imperforate outer wall for each section,

thus obtaining a very strong block, notwithstanding its sectional construction.

Each section is provided at its lower portion with an outwardly extending flange C,

' the, flanges ofadjacent sections abutting against each other so as to form a continuous ledge along the outer edge of the block, as shown in Fig. 1. The flanges C of adjoining blocks are also in engagement with each other as shown in Figs. 2 and 4, and thus in a complete floor, intersecting channels F are formed between the blocks, and these channels, whic'hare open at the top, may readily have rods F laid in them from above while the blocks are supported on a suitable fiat surface. The sections may be held together temporarily by. tie wires B or other holding devices, but this is not necessary. The rods F having been secured in the walls of the building, cement H is poured into the channels F so as'to fill them and form a'continudus course around each of the blocks A, thus securely holding the sections B together. To properly osition the rods F within the channe s F I may employ metal loops G, but these are not essential.

The lower surface of the floor thus formed consists entirely of brick or tile sections, and is perfectly :fire-proof. The tie-rods F are located near the bottom o'i the blocli A (and the flanges C can'be made very thin) so that the strength of the floor is very great. At the centerlof each block I prefer to-provide a recess or chamber open; at the top. For this-purpose, the inner ends of the sections B are made with bottom flanges D,

abutting'as shown in Fig. .1 when the sec' tions are put together, and for-min a bottom to a central recess left between t e vertical inner walls of the sections. filled with cement H thus forming as it were a central anchor to hold tho-sections together. The provision of thecentralppem ing or recess greatly facilitates the insertion of wiring, piping, etc,- at this point. In such a case only the flanges D would have to be drilled for the passage of the wires, pipes, etc. then such wires, etc. would be inserted, and finally the cement H would be poured' in so as to cause the pipes, etc.'to become embedded therein.

In seof the tie-rods F bending owing to heavy loads, the flanges'D will hold the rods -against'breaking loose from the cement, not

This recess is ill) may be made comparatively thin so as to redupe theweight of the blocks.

An important advantage of the sectional construction described is that it enables me to make com aratively large blocks from sections of 1110( erate cross-section such as are easily made on machines of the available size.

In some cases (see Fig. 4) the cement is made to cover the upper surface of the blocks A.

I desire it to be understood that my invention is also applicable to ceilin s, and that the term floor used in the claims covers ceilin s as equivalents.

T ciiiim as my invention:

1. A floor comprising blocks composed of open-emf tubular sections, each having its end surfaces on the bias, adjacent sections being arranged with their longitudinal axes at an angle to each other and with their open ends in en agement, the tubular recesses of the several sections forming together an annular chamber.

2. A floor comprising blocks composed of substantially straight tubular sections set. together at an angle to each other with their cavities or recesses registering to form a continuous-annular chamber.

3. A floor comprising blocks composed of wedge-shaped sections, each section being a tube whose axis is parallel to the. closed top and bottom surfaces of the block, said sections being fitted together end to end and forming, around the center of the block, a rin -shaped chamber or space having closed wa s.

4. A floor comprising blocks composed of tubular sections set to ether with their open ends in engagement a on surfaces directed toward the center of the block, the communieating recesses or cavities of said sections forming an annular chamber in the block.

5. A floor comprising blocks composed of tubular sections set together with their open ends in engagement along radial surfaces, the recesses or cavities of said sections forming together an annular chamber in the block, each section being provided upon the side nearest the center of the block, with a flange abutting against like flanges of the neighboring sections and forming therewith the bottom to a central space between the sections.

6. A floor comprising blocks composed of tubular sections set together with their open ends in engagement along radial surfaces, the recesses or cavities of the several sections forming to 'cther an annular chamber in the block, ant the inner walls of the sections being s wood from each other to leave a recess at the center of the block.

7. A floor comprising blocks having an annular internal chamber with closed top and bottom walls and arecess in the upper surface of the block, at the central portion thereof.

8. A floor comprising blocks composed of tubular sections set together with their open ends in en agement, the tube axes of all sections of tlie same block lying in the same plane, and the recesses or cavities of the several sections forming together an annular chamber in the block.

9. A floor comprising blocks composed of tubular sections set together with their open ends in engagement, the tube axes of ttll sections of the same block lying in the same plane, and the recesses or cavities of the sev oral sections forming together an annular chamber in the block, and the inner walls of the sections being spaced from each other to leave a recess at the center of the block.

10. A floor comprising blocks composed of tubular sections set together with their open ends in en agement, the tube axes of all sections of the same block lying in the same plane, and the recesses or cavities of the. several sections forming together an annular chamber in the block, the inner walls of the sections being spaced from each other to leave a recess at the center of the. block, and the outer walls being provided with outwardly extending flanges.

11. A floor comprising blocks composed of sections fitted together along radial surfaces to form a polygonal figure, and having their walls spaced at the center of the block to form a central recess, and binding material around the edges of the blocks and in the central recesses thereof.

12. A floor comprising blocks composed of tubular sections set together along radial surfaces to form a polygonal figure with their cavities or recesses re istering to form an internal annular chamber, each of said sec.- tions having an inwardly-extcnding flange at the central portion of the block, and an outwardly-extending flange at the outer edge of the block, the inner flan es forming to- "other a bottom for accntral spaco or recess in the block, and the outer flanges forming together a bottom for channels surrmmding the block and adapted to be filled with binding material.

13. A floor comprising blocks composed of sections fitted together along radial surfaces to form a polygonal figure, each section extending from the central portion of' the. block to the outer portion thereof, and having a continuous imporforate wall at the. outer portion of the block, the inner portions of the sections being spaced to form a recess at the center of the block for the reception of binding material to firmly connect the. sections at the center.

14. A floor com n'ising blocks composed of tubular sections fitted together end to end along radial surfaces to form a polygonal figure, with their cavities forming an annular chamber in tho bloch, each section extending from the central portion of the block to thc I'll) vouter portion thereof, the inner 'portionsof block, theinner walls of said sections being 7 from each other so its to leave, at the spaced recess for the recepcenter of the block, .a

of I tion of a connecting or binding materiel.

' In testimony whereof I have hereunto set myfhand and sealin the presence oi. two "sub 15 scribing witnesses this 21st day of May, 1907. FERDINAND BURGHARTZ. [Li s.]

Witnesses: Jenn A. 'KEHLENBECK,

R, ABERLEZ. 

